
Four Potting Mixes That Cover Almost Every Houseplant
Bagged compost is designed for garden beds and outdoor containers, not for a pot indoors. Four ingredients and four ratios will serve everything on your shelf better.
Most plant problems start below the surface
Mixing your own potting media, understanding perlite and vermiculite, choosing pots that drain, and letting go of the drainage-layer myth.
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Photo: Soil by HolgerK at English Wikipedia · Public domain · via Wikimedia Commons

Bagged compost is designed for garden beds and outdoor containers, not for a pot indoors. Four ingredients and four ratios will serve everything on your shelf better.

Both are white-ish mineral granules sold on the same shelf for the same price, and people treat them as interchangeable. One adds drainage; the other adds water retention.

Putting stones in the bottom of a pot is the most widely repeated piece of plant advice there is. It has been known to be counterproductive since the 1950s, and the physics is not complicated.